Use Fast Dimensioning to Add Dimension Constraints

General

  • You can use Fast Dimensioning to add distance, angle, diameter or radius constraints.
  • Fast dimensioning adds a diameter constraint to a circle and a radius constraint to an arc.
  • Note that Fast Dimensioning always adds an angle constraint between divergent lines, while the distance constraint turns divergent lines parallel.

Add a dimension constraint

  1. Select Sketch | Fast Dimensioning.
  2. Select the element being dimensioned, such as a line, circle or a pair of points.
  3. Click the position of the dimension.
    • The program opens the dialog box Edit Constraint.
  4. Edit the data in the Edit constraint dialog box.
  5. Select OK.
    • If the dimension constraint is the first distance, diameter or radius dimension of the sketch, then the dimension scales all the lines of the sketch to match the entered dimension.
  6. Repeat steps 2 to 5 to add new constraints
  7. Stop adding constraints
    • Select another function or
    • press the V key or
    • press the Esc key or
    • click the middle mouse button.

Note:
  • You can dimension the diameter of a part which is rotationally symmetric.
  • The dimension will change between distance and diameter when you move the cursor over the rotation axis before positioning the dimension.
  • The type of one of the lines must be Rot.Axis.
  • This works for both the Distance and the Dimension constraints.
  • After positioning the dimension you can drag the it elsewhere and it will remain a diameter dimension.